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-12- <br />The operator has performed chemical analyses on samples of the overburden, <br />interburden and foal strata. Based on these analyses, the Division has <br />determined that there should be no problem with acid-forming materials or <br />toxic heavy metals at the site. The overburden, however, may affect the <br />salinity and alkalinity of surface waters and ground waters. These effects <br />are expected to be negligible, see hydrology section for a further discussion. <br />The applicant has supplied sufficient geologic information for the Division's <br />use in making findings and, therefore, is in compliance with the requirements <br />of this section. <br />V. Ground Water Hydrology - Rules 2.04.5, 2.04.7, 2.05.6(3), and 4.05 <br />Ground water hydrology information can be found in the permit revision <br />application Volumes 1 through 3 Sections 2.04.4, 2.04.21, 2.05.31, and the PAR <br />Responses of February 6, 1985, February 22, 1985 April 11, 1985, and <br />April 17, 1985. <br />The permittee has collected baseline data in Deep Creek Canyon. Definition of <br />aquifer characteristics is based on this data as will as data extrapolated <br />from the Barren Ridge Area. <br />Quantity and quality data for well W-6 located in Deep Creek Canyon, has been <br />collected for a number of years, while depth to water measurements at two <br />other wells has been collected since late 1983. <br />Four aquifer systems exist in the permit and adjacent areas: <br />1. The regional Pictured Cliffs Sandstone aquifer; <br />2. The aquifer system associated with the coals and overburden <br />sandstones of the lower Fruitland Formation; <br />3. A limited alluvial/colluvial flow system in Deep Creek Canyon; <br />4. The alluvial aquifer associated with Stollsteimer Creek. <br />The Pictured Cliffs Sandstone, located stratigraphically 60 to 80 feet below <br />the "B" seam, is the first regionally significant aquifer encountered below <br />the lowest extent of mining. The strata between the "B" coal and the Pictured <br />Cliffs are relatively impermeable. The mine should not affect the Pictured <br />Cliffs due to the thickness of the separating strata and the nature of the <br />present mine plan. <br />Aquifer tests were performed on the lower Fruitland Formation at Barren Ridge <br />0.5 miles northwest of the Permit Revision No. 2 area in 1982 and 1983. These <br />tests showed that the lower Fruitland has an average transmissivity value of <br />210 gallons per day per foot (gpd/ft), and a storativity of 1.3 x 10-4 <br />(dim). Hydraulic conductivity is estimated to be 0.8 ft/day. These values <br />indicate that the lower Fruitland supports limited ground water movement. <br />